title: Energy levels of interacting curved nanomagnets in a frustrated geometry: increasing accuracy when using finite difference methods.
abstract: The accuracy of finite difference methods is related to the mesh choice and cell size. Concerning the micromagnetism of nano-objects, we show here that discretization issues can drastically affect the symmetry of the problem and therefore the resulting computed properties of lattices of interacting curved nanomagnets. In this paper, we detail these effects for the multi-axis kagome lattice. Using the OOMMF finite difference method, we propose an alternative way of discretizing the nanomagnet shape via a variable moment per cell scheme. This method is shown to be efficient in reducing discretization effects.
authors.affiliation: Institut Jean Lamour, CNRS-Université de Lorraine, boulevard des aiguillettes, BP 70239, F-54506 Vandoeuvre lès Nancy, France.
authors.forename: H
authors.initials: H
authors.lastname: Riahi
authors.forename: F
authors.initials: F
authors.lastname: Montaigne
authors.forename: N
authors.initials: N
authors.lastname: Rougemaille
authors.forename: B
authors.initials: B
authors.lastname: Canals
authors.forename: D
authors.initials: D
authors.lastname: Lacour
authors.forename: M
authors.initials: M
authors.lastname: Hehn
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D059346:Magnets; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D012984:Software